Printer Cover Partial Opening Mechanism for Jam Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users find it difficult to perceive which cover is unlocked in printing apparatuses when a jam occurs, as existing technologies do not provide adequate visual or informational cues.
Innovation Solution
Incorporating a cover unit that can be opened by a predetermined degree due to an urging force, with a locking unit that unlocks the cover, allowing users to easily identify which cover is openable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cover is unlocked to allow user access for jam resolving actions, then the usability is improved, but the user cannot easily perceive which cover is unlocked
Solution Approach 1:
The patent applies color changes to indicate cover status. When a cover is unlocked, it changes color (e.g., from green to red) to visually signal to the user that the cover is openable. This resolves the contradiction by providing clear visual information about cover status while maintaining ease of access when needed.
Solution Approach 2:
The patent introduces an intermediary indicator mechanism between the locking unit and the user. This indicator (such as a visual display or physical marker) mediates the transmission of cover status information to the user, solving the information perception problem without interfering with the cover's accessibility function.
2Ease of operation
If the cover opens fully when unlocked, then the user can easily access the conveying path, but the user may not distinguish between locked and unlocked states
Solution Approach 1:
The patent applies partial action by opening the cover only to a predetermined degree (partially) when unlocked, rather than opening it fully. This partial opening is sufficient to signal the unlocked state to the user while maintaining clear distinction between locked and unlocked conditions, thus resolving the contradiction between ease of access and state differentiation.
Solution Approach 2:
The patent introduces dynamic behavior where the cover automatically opens to a specific degree when unlocked, creating a distinguishable physical state change. This dynamic response provides clear feedback to the user about the cover's status while maintaining easy access when needed.
3Device complexity
If no visual indication is provided when cover is unlocked, then the device complexity is reduced, but the user experience deteriorates
Solution Approach 1:
The patent applies self-service by designing the cover unit itself to provide visual indication of its unlocked state through automatic color change or physical positioning. The cover indicates its own status without requiring separate complex indication mechanisms, thus maintaining low device complexity while improving user perception and experience.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to easily recognize which cover is unlocked, improving usability and preventing accidental attempts to open locked covers, thus enhancing operational safety and ease of use.
Implementation Method 1
the cover unit is opened by a predetermined degree by urging force of the urging unit
Data Source
AI summary
Provided is a printing apparatus that allows the user to easily perceive that the cover is unlocked. In the printing apparatus that includes: a cover unit configured to expose the conveying path, along which the printing medium is conveyed, to the outside when the cover unit is opened and that shields the conveying path when the cover unit is closed; and a locking configured to lock the cover unit to keep it closed, and that performs printing on the printing medium being conveyed along the conveying path, the cover unit is urged by an urging unit in the opening direction. In addition, when the locking unit unlocks the cover unit the cover unit is opened by a predetermined degree by the urging force of the urging unit.